Miscellaneous
Resonance Air Column with Speaker
Resonance air column and mini speaker for sound source resonance demonstrations.
The Resonance Air Column (WA-9606) emits a very loud sound when the plunger is moved to a node position. It works as well as a water column but without the mess. The secret is in the long molded piston head, which is very efficient in reflecting the sound waves. The plunger handle is made of flexible acetyl so it will not break.
https://www.pasco.com/products/lab-apparatus/waves-and-sound/resonance-and-sound/wa-9594#specs-panel